Rename `SetResultIsInternal` and `GetResultIsInternal` to `SetSuppressPersistentResult`
and `GetSuppressPersistentResult` respectively. Also rename `m_result_is_internal`.
This matches the naming in the SB API.
A separate change calls `SetSuppressPersistentResult`, where the name
`SetResultIsInternal` doesn't quite fit.
Differential Revision: https://reviews.llvm.org/D144042
This patch adds several missing GlobalList modifier functions, like
removeGlobalVariable(), eraseGlobalVariable() and insertGlobalVariable().
There is no longer need to access the list directly so it also makes
getGlobalList() private.
Differential Revision: https://reviews.llvm.org/D144027
This patch adds several missing AliasList modifier functions, like
removeAlias(), eraseAlias() and insertAlias().
There is no longer need to access the list directly so it also makes
getAliaList() private.
Differential Revision: https://reviews.llvm.org/D143958
lldb may crash when performing `image lookup --verbose --address $ADDR`.
The ExecutionContext that gets passed into DWARFExpression::Evaluate may
be valid but unpopulated. However, in one specific case, we were
assuming that it has a valid Target and using it without checking first.
We reach this codepath when we attempt to get information about an
address that doesn't map to a CompileUnit in the module containing the
requested address. lldb then checks to see if it maps to a global
variable, so lldb has to evaluate the location of each global variable
in the module. If a location expression contains DW_OP_deref_size that
uses a FileAddress, we hit this code path. The simplest test case is to
take a module that has a global variable with DW_OP_deref_size in its
location expression, attempt to read an address that doesn't map to a
CompileUnit (e.g. 0x0) and ensure we don't crash.
Differential Revision: https://reviews.llvm.org/D143792
This patch mechanically replaces None with std::nullopt where the
compiler would warn if None were deprecated. The intent is to reduce
the amount of manual work required in migrating from Optional to
std::optional.
This is part of an effort to migrate from llvm::Optional to
std::optional:
https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716
DWARFExpression::Evaluate will convert DW_OP_addr addresses in
a DWARF expression into load addresses on the expression stack
when there is a StackFrame in the ExecutionContext, this from
a change in 2018 in https://reviews.llvm.org/D46362. At the
time this was handling a case that came up in swift programs,
and is no longer necessary. I generalized this conversion to
a load address when a Target is available in
https://reviews.llvm.org/D137682 to make a test case possible;
this change broke a use case that Ted reported.
This change removes my test case, and removes this conversion
of a DW_OP_addr into a load address in some instances.
Differential Revision: https://reviews.llvm.org/D139226
Parsing DWARF expressions currently does not support DW_OPs that are vendor
extensions. With this change expression parsing calls into SymbolFileDWARF for
unknown opcodes, which is the semantically "closest" plugin that we have right
now. Plugins can then extend SymbolFileDWARF to add support for vendor
extensions.
Reviewed By: labath
Differential Revision: https://reviews.llvm.org/D137247
When a process gets restarted TypeSystem objects associated with it
may get deleted, and any CompilerType objects holding on to a
reference to that type system are a use-after-free in waiting. Because
of the SBAPI, we don't have tight control over where CompilerTypes go
and when they are used. This is particularly a problem in the Swift
plugin, where the scratch TypeSystem can be restarted while the
process is still running. The Swift plugin has a lock to prevent
abuse, but where there's a lock there can be bugs.
This patch changes CompilerType to store a std::weak_ptr<TypeSystem>.
Most of the std::weak_ptr<TypeSystem>* uglyness is hidden by
introducing a wrapper class CompilerType::WrappedTypeSystem that has a
dyn_cast_or_null() method. The only sites that need to know about the
weak pointer implementation detail are the ones that deal with
creating TypeSystems.
rdar://101505232
Differential Revision: https://reviews.llvm.org/D136650
When we cannot allocate memory in the inferior process, the IR
interpreter's IRMemoryMap::FindSpace will create an lldb local
buffer and assign it an address range in the inferior address
space. When the interpreter sees an address in that range, it
will read/write from the local buffer instead of the target. If
this magic address overlaps with actual data in the target, the
target cannot be accessed through expressions.
Instead of using a high memory address that is validly addressable,
this patch uses an address that cannot be accessed on 64-bit systems
that don't actually use all 64 bits of the virtual address.
Differential Revision: https://reviews.llvm.org/D137682
rdar://96248287
We generally prohibit this at a higher level - for instance requiring
the process to be stopped for "expr". But when we trigger an expression
for internal purposes (e.g. to fetch types from the ObjC runtime) we weren't
checking the process state. Now we explicitly check this at the very start
of the job so we don't get into bad states.
Differential Revision: https://reviews.llvm.org/D137684
When resolving absolute addresses for DW_OP_addr or DW_OP_addrx, these are always load addresses rather than file addresses in wasm.
Reviewed By: DavidSpickett
Differential Revision: https://reviews.llvm.org/D135664
This patch had to be reverted because on gcc 7.5.0 we see an error converting from std::unique_ptr<MCRegisterInfo> to Expected<std::unique_ptr<MCRegisterInfo>> as the return type for the function createRegInfo. This has now been fixed.
I went over the output of the following mess of a command:
(ulimit -m 2000000; ulimit -v 2000000; git ls-files -z | parallel
--xargs -0 cat | aspell list --mode=none --ignore-case | grep -E
'^[A-Za-z][a-z]*$' | sort | uniq -c | sort -n | grep -vE '.{25}' |
aspell pipe -W3 | grep : | cut -d' ' -f2 | less)
and proceeded to spend a few days looking at it to find probable typos
and fixed a few hundred of them in all of the llvm project (note, the
ones I found are not anywhere near all of them, but it seems like a
good start).
Differential revision: https://reviews.llvm.org/D131122
Debugging some DWARF5 binaries was causing errors to appear when DWARFExpression::Evaluate was called:
error: GetDIE for DIE 0x31 is outside of its CU 0x123450
The issue is in the DWARF expression evaluator. Fixed with this.
Differential Revision: https://reviews.llvm.org/D133623
Patch adds support for fadd, fsub, fdiv, fmul and fcmp to IR interpreter.
~~~
OS Laboratory. Huawei RRI. Saint-Petersburg
Reviewed By: clayborg
Differential Revision: https://reviews.llvm.org/D126359
Resubmission of https://reviews.llvm.org/D130309 with the 2 patches that fixed the linux buildbot, and new windows fixes.
The FileSpec APIs allow users to modify instance variables directly by getting a non const reference to the directory and filename instance variables. This makes it impossible to control all of the times the FileSpec object is modified so we can clear cached member variables like m_resolved and with an upcoming patch caching if the file is relative or absolute. This patch modifies the APIs of FileSpec so no one can modify the directory or filename instance variables directly by adding set accessors and by removing the get accessors that are non const.
Many clients were using FileSpec::GetCString(...) which returned a unique C string from a ConstString'ified version of the result of GetPath() which returned a std::string. This caused many locations to use this convenient function incorrectly and could cause many strings to be added to the constant string pool that didn't need to. Most clients were converted to using FileSpec::GetPath().c_str() when possible. Other clients were modified to use the newly renamed version of this function which returns an actualy ConstString:
ConstString FileSpec::GetPathAsConstString(bool denormalize = true) const;
This avoids the issue where people were getting an already uniqued "const char *" that came from a ConstString only to put the "const char *" back into a "ConstString" object. By returning the ConstString instead of a "const char *" clients can be more efficient with the result.
The patch:
- Removes the non const GetDirectory() and GetFilename() get accessors
- Adds set accessors to replace the above functions: SetDirectory() and SetFilename().
- Adds ClearDirectory() and ClearFilename() to replace usage of the FileSpec::GetDirectory().Clear()/FileSpec::GetFilename().Clear() call sites
- Fixed all incorrect usage of FileSpec::GetCString() to use FileSpec::GetPath().c_str() where appropriate, and updated other call sites that wanted a ConstString to use the newly returned ConstString appropriately and efficiently.
Differential Revision: https://reviews.llvm.org/D130549
This reverts commit 9429b67b8e300e638d7828bbcb95585f85c4df4d.
It broke the build on Windows, see comments on https://reviews.llvm.org/D130309
It also reverts these follow-ups:
Revert "Fix buildbot breakage after https://reviews.llvm.org/D130309."
This reverts commit f959d815f4637890ebbacca379f1c38ab47e4e14.
Revert "Fix buildbot breakage after https://reviews.llvm.org/D130309."
This reverts commit 0bbce7a4c2d2bff622bdadd4323f93f5d90e6d24.
Revert "Cache the value for absolute path in FileSpec."
This reverts commit dabe877248b85b34878e75d5510339325ee087d0.
The FileSpect APIs allow users to modify instance variables directly by getting a non const reference to the directory and filename instance variables. This makes it impossibly to control all of the times the FileSpec object is modified so we can clear the cache. This patch modifies the APIs of FileSpec so no one can modify the directory or filename directly by adding set accessors and by removing the get accessors that are non const.
Many clients were using FileSpec::GetCString(...) which returned a unique C string from a ConstString'ified version of the result of GetPath() which returned a std::string. This caused many locations to use this convenient function incorrectly and could cause many strings to be added to the constant string pool that didn't need to. Most clients were converted to using FileSpec::GetPath().c_str() when possible. Other clients were modified to use the newly renamed version of this function which returns an actualy ConstString:
ConstString FileSpec::GetPathAsConstString(bool denormalize = true) const;
This avoids the issue where people were getting an already uniqued "const char *" that came from a ConstString only to put the "const char *" back into a "ConstString" object. By returning the ConstString instead of a "const char *" clients can be more efficient with the result.
The patch:
- Removes the non const GetDirectory() and GetFilename() get accessors
- Adds set accessors to replace the above functions: SetDirectory() and SetFilename().
- Adds ClearDirectory() and ClearFilename() to replace usage of the FileSpec::GetDirectory().Clear()/FileSpec::GetFilename().Clear() call sites
- Fixed all incorrect usage of FileSpec::GetCString() to use FileSpec::GetPath().c_str() where appropriate, and updated other call sites that wanted a ConstString to use the newly returned ConstString appropriately and efficiently.
Differential Revision: https://reviews.llvm.org/D130309
DW_OP_skip/DW_OP_bra can move offset to the end of the data, which means that this was the last instruction to execute and the interpreter should terminate.
Reviewed By: labath
Differential Revision: https://reviews.llvm.org/D130285
This patch adds support for evaluating expressions which reference
a captured `this` from within the context of a C++ lambda expression.
Currently LLDB doesn't provide Clang with enough information to
determine that we're inside a lambda expression and are allowed to
access variables on a captured `this`; instead Clang simply fails
to parse the expression.
There are two problems to solve here:
1. Make sure `clang::Sema` doesn't reject the expression due to an
illegal member access.
2. Materialize all the captured variables/member variables required
to evaluate the expression.
To address (1), we currently import the outer structure's AST context
onto `$__lldb_class`, making the `contextClass` and the `NamingClass`
match, a requirement by `clang::Sema::BuildPossibleImplicitMemberExpr`.
To address (2), we inject all captured variables as locals into the
expression source code.
**Testing**
* Added API test
This is required in preparation for the follow-up patch which adds
support for evaluating expressions from within C++ lambdas. In such
cases we need to materialize variables which are not part of the
current frame but instead are ivars on a 'this' pointer of the current
frame.
This reland 227dffd0b6d78154516ace45f6ed28259c7baa48 and
562c3467a6738aa89203f72fc1d1343e5baadf3c with failed api tests fixed by keeping
function base file addres in DWARFExpressionList.
...type variable by dereferencing the variable before
evaluating the expression.
Reviewed By: labath
Differential Revision: https://reviews.llvm.org/D128126
